public class calimpl implements CalInt{
    @Override
    public int add(int i, int j){
//        System.out.println("两数相加："+ (i+j));
        return i+j;
    }

    @Override
    public int multi(int i, int j) {
//        System.out.println("两数相乘："+ (i*j));
        return i*j;

    }

    @Override
    public int sub(int i, int j) {
//        System.out.println("两数相减："+ (i-j));
        return i-j;

    }

    @Override
    public int div(int i, int j) {
//        System.out.println("两数相除："+ (i/j));
        return i/j;

    }
}
